KRI Nagapasa (403)

Diesel-Electric Attack Submarine [ 2017 ]

KRI Nagapasa 403, of South Korean origin, leads the three-strong Nagapasa-class diesel-electric subs for the Indonesian Navy.

Authored By: Staff Writer | Last Edited: 08/01/2023 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Official image from the Indonesian Navy; Public Release.

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KRI Nagapasa (403) leads her three-strong Nagapasa-class of diesel-electric attack submarines for the modern Indonesian Navy. The boats are an original South Korean design with construction after the first boat now involving Indonesian shipyards. With the three in service, a further three remain on order (2023) and the class is fielded alongside the West German-born Cakra-class which constitutes just a single hull, KRI Cakra (KRI Nanggala tragically being lost in April 2021 with all hands aboard).

The boats represent the most modern of the undersea offerings of the Indonesian Fleet and are therefore a critical component to national defense and deterrence.

KRI Nagapasa was ordered in December of 2011 and saw her keel laid down by Daewoo Shipbuilding and Marine Engineering of South Korea on April 9th, 2015. Launched on March 24th, 2016, the boat was commissioned into service with the Indonesian Navy on August 2nd, 2017.

Externally, the design of Nagapasa is conventional with a tubular hull, rectangular sail, and blunt nosecone section. Internally, power is from 4 x MTU 12C493 diesel generators developing 5,000 horsepower propelling the boat to submerged speeds of 21.5 knots out to a range of 11,000 nautical miles. The hull has been tested to depths of 1,600 feet. Installed systems include the Kongsberg MSI-90U Mk.2 Combat Management System (CMS), the Atlas Elektronik CSU-90 active/passive sonar array, and the Wartsilia ELAC KaleidoSope sonar system. The crew numbers 40 men.

Displacement is 1,400 tons and the hull measures 201.1 feet long with a beam of 20.7 feet and a draught of 18.1 feet.

Armament is 8 x 533mm (21") torpedo tubes with 14 "Black Shark" torpedo reloads.©MilitaryFactory.com

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Specifications

Daewoo Shipbuilding and Marine Engineering - South Korea
Shipbuilder(s)

Indonesia
Operators

2017
Commissioned

South Korea
National Origin

Commissioned, Active
Project Status

40
Complement

Nagapasa-class
Hull Class

3
Number-in-Class

KRI Nagapasa (403); KRI Ardadedali (404); KRI Alugoro (405)
Ships-in-Class

Submerged Attack
Traveling under the surface to search, track, and / or engage or reconnoiter areas.

Maritime Patrol
Active patroling of vital waterways and maritime areas; can also serve as local deterrence against airborne and seaborne threats.

Fleet Support
Serving in support (either firepower or material) of the main surface fleet in Blue Water environments.

TORPEDOES
Ability to launch torpedoes against ocean-going targets.

201.1 feet
(61.30 meters)
Length

20.7 feet
(6.31 meters)
Beam

18.1 feet
(5.52 meters)
Draught

1,400
tons
Displacement

4 x MTU 12V493 diesel generators developing 5,000 horsepower to 1 x Shaft astern.
Propulsion

11.0 knots
(12.7 mph)
Surface Speed

21.5 knots
(24.7 mph)
Submerged Speed

11,297 nm
(13,000 miles | 20,921 km)
Range

1 knot = 1.15 mph; 1 nm = 1.15 mile; 1 nm = 1.85 km

8 x 533mm (21in) torpedo tubes supporting the Black Shark torpedo family; 14 torpedo reloads.

None.

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Images

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Official image from the Indonesian Navy; Public Release.

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